Which lines from "Mending Wall" best indicate that the speaker is amused while repairing the wall? O We wear our fingers rough with handling them.
Oh, just another kind of out-door game,
O No one has seen them made or heard them made,
But at spring mending-time we find them there.
And he likes having thought of it so well
He says again, "Good fences make good neighbours."
We have to use a spell to make them balance:
"Stay where you are until our backs are turned!"

We have to use a spell to make them balance:

"Stay where you are until our backs are turned!"

Explanation:

The lines selected above show the part of the poem where the speaker shows that he is having fun repairing the wall. We can see this because these are the only lines that present a tone of relaxation and joviality, which contrasts with the more serious tone presented in the previous lines. With this, we can see that the speaker sees this moment as a distraction and a novelty, which can be enjoyed and fun.

showing or suffering from nervousness, fear, or a lack of confidence